Custom Search
|
|
|
||
 TABLE 5-3: Repairability of Various Absorbers
Manufactured by Collector Manufacturers
REPAIRABLE?
NOTES
TYPE OR BRAND
Rollbond plate
American Solar
Rarely
King SG-15
Fairly thin fin
Colt C-141
Yes
Fairly thick fin
Daystar 1400,
Yes
1600, 1600 TLS
Fin wrapped
Gulf Thermal
Yes
around tube
May be hard to
Yes
Grumman Sunstream
remove fin
121, 232, 221,
232, 321A, 332A
Fairly thin fin
Morning Star
Yes
Sometimes
Only at riser to
Revere
header joints
Fairly thin fin
Sunworks
Yes
U.S. Solar
Yes
May be hard to
remove fin
Western Solar
Sometimes
Some models use
"D" shaped tube
Development
If the leak is at the joint between the header and a riser, it must be rebrazed.
Carefully remove any absorber fin which covers the leaking joint. On some
absorbers it is possible to use the "feather of a torch on the back side to melt solder
holding the fin on the tubes, then bend the fin back. On other absorbers, careful
work with tin snips will expose the joint.
The joint must be thoroughly cleaned and rebrazed (Figure 5-7). Use phoscopper or
silver bearing brazing alloy. Do not use solder! Even silver solder will not hold up to
the combination of temperature and mechanical stress this joint undergoes.
REPAIR
150
5.2 REPAIR PROCEDURES
|
 
|
|
|
||
